LAMONTAI IMPROVEMENT WTR DIST

Oregon — Community Water System — PWSID: OR4100238

System Information

PWSID	OR4100238
System Name	LAMONTAI IMPROVEMENT WTR DIST
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Local
EPA Region	10
Serves School	No
Wholesaler	No
First Reported	Mar 12, 1979
Last Reported	Dec 23, 2025

Location & Contact

State	Oregon
City	COTTAGE GROVE
ZIP Code	97424
Address	75105 TARA LN
Organization	LAMONTAI IMPROVEMENT WTR DIST
Phone	541-206-3976

Population & Service

Population Served	255
Service Connections	98

Drinking Water Violations (60)

This water system has 60 violations recorded in the EPA SDWIS database.

Begin Date	End Date	Contaminant	Category	Health-Based	Major	Measured	Federal MCL	State MCL	Status	Return to Compliance	Rule
Oct 1, 2023	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Aug 23, 2024	Lead and Copper Rule
Oct 1, 2023	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Dec 5, 2023	Consumer Confidence Rule
Jan 1, 2017	Mar 31, 2017	Gross Alpha, Excl. Radon and U	MR	No	Yes	—	15 pCi/L	—	Resolved	Mar 31, 2017	Radionuclides and Revised Rad Rule
Jan 1, 2017	Mar 31, 2017	Combined Uranium	MR	No	Yes	—	30 ug/L	—	Resolved	Mar 31, 2017	Radionuclides and Revised Rad Rule
Jan 1, 2017	Mar 31, 2017	Combined Radium (-226 and -228)	MR	No	Yes	—	5 pCi/L	—	Resolved	Mar 31, 2017	Radionuclides and Revised Rad Rule
Jan 1, 2012	Dec 31, 2012	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Ground Water Rule
Jan 1, 2012	Dec 31, 2012	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Ground Water Rule
Jan 1, 2012	Dec 31, 2012	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Ground Water Rule
Jan 1, 2012	Dec 31, 2012	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Ground Water Rule
Jan 1, 2012	Dec 31, 2012	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Ground Water Rule
Jan 1, 2012	Dec 31, 2012	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Ground Water Rule
Jan 1, 2012	Dec 31, 2012	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Ground Water Rule
Jan 1, 2012	Dec 31, 2012	COLIPHAGE	MR	No	Yes	—	—	—	Resolved	Dec 31, 2012	Ground Water Rule
Dec 1, 2009	Dec 31, 2009	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2009	Total Coliform Rule
Dec 1, 2009	Dec 31, 2009	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2009	Total Coliform Rule
Jun 1, 2005	Jun 30, 2005	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2005	Total Coliform Rule
Jun 1, 2005	Jun 30, 2005	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2005	Total Coliform Rule
Jun 1, 2005	Jun 30, 2005	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2005	Total Coliform Rule
Jun 1, 2005	Jun 30, 2005	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 2005	Total Coliform Rule
Dec 1, 2004	Dec 31, 2004	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2004	Total Coliform Rule
Oct 1, 2004	Oct 31, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2004	Total Coliform Rule
Oct 1, 2004	Oct 31, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2004	Total Coliform Rule
Oct 1, 2004	Oct 31, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2004	Total Coliform Rule
Sep 1, 2004	Sep 30, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2004	Total Coliform Rule
Sep 1, 2004	Sep 30, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2004	Total Coliform Rule
Sep 1, 2004	Sep 30, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2004	Total Coliform Rule
Sep 1, 2004	Sep 30, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 2004	Total Coliform Rule
Aug 1, 2004	Aug 31, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 2004	Total Coliform Rule
Aug 1, 2004	Aug 31, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 2004	Total Coliform Rule
Aug 1, 2004	Aug 31, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 2004	Total Coliform Rule
Aug 1, 2004	Aug 31, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 2004	Total Coliform Rule
Apr 1, 2004	Apr 30, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Apr 30, 2004	Total Coliform Rule
Apr 1, 2004	Apr 30, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Apr 30, 2004	Total Coliform Rule
Apr 1, 2004	Apr 30, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Apr 30, 2004	Total Coliform Rule
Apr 1, 2004	Apr 30, 2004	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Apr 30, 2004	Total Coliform Rule
Mar 1, 2003	Mar 31, 2003	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Mar 31, 2003	Total Coliform Rule
Nov 1, 2002	Nov 30, 2002	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 2002	Total Coliform Rule
Oct 1, 2002	Oct 31, 2002	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2002	Total Coliform Rule
May 1, 2002	May 31, 2002	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 2002	Total Coliform Rule
Apr 1, 2002	Apr 30, 2002	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Apr 30, 2002	Total Coliform Rule
Apr 1, 2002	Apr 30, 2002	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Apr 30, 2002	Total Coliform Rule
Mar 1, 2002	Mar 31, 2002	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Mar 31, 2002	Total Coliform Rule
Aug 1, 2001	Aug 31, 2001	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Aug 31, 2001	Total Coliform Rule
May 1, 2001	May 31, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	May 31, 2001	Total Coliform Rule
Jan 1, 2001	Jan 31, 2001	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jan 31, 2001	Total Coliform Rule
Oct 1, 2000	Oct 31, 2000	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2000	Total Coliform Rule
Oct 1, 2000	Oct 31, 2000	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Oct 31, 2000	Total Coliform Rule
Sep 1, 2000	Sep 30, 2000	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2000	Total Coliform Rule
Jan 1, 1999	Dec 31, 1999	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1999	Nitrate Rule
Jan 1, 1997	Dec 31, 1997	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1997	Nitrate Rule

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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